Fungus
Sclerotinia homoeocarpa
Symptoms
On closely mowed turf: Collection of silver dollar size, tannish brown to whitish spots. Turf appears speckled or mottled.
On residential turf: Collection of 1 inch to 6 inch diameter bleached white patches.
Grasses susceptible
All cool season turfgrasses.
Conditions favoring disease
Warm days (60-90 degrees F/ 16-32 degrees C) and cool nights above (50 degrees F/ 10 degrees C).
Prolonged leaf wetness, dew, and high humidity.
Dry soils with low nitrogen fertility.
Cultural Options
Maintain adequate fertility.
Reduce compaction and limit thatch.
Minimize leaf wetness.
Avoid drought stress (proper watering).
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